expect_match {testthat}R Documentation

Expectation: does string match a regular expression?

Description

Expectation: does string match a regular expression?

Usage

expect_match(object, regexp, perl = FALSE, fixed = FALSE, ..., all = TRUE,
  info = NULL, label = NULL)

Arguments

object

object to test

regexp

Regular expression to test against.

perl

logical. Should Perl-compatible regexps be used?

fixed

logical. If TRUE, pattern is a string to be matched as is. Overrides all conflicting arguments.

...

Arguments passed on to base::grepl

ignore.case

if FALSE, the pattern matching is case sensitive and if TRUE, case is ignored during matching.

useBytes

logical. If TRUE the matching is done byte-by-byte rather than character-by-character. See ‘Details’.

all

Should all elements of actual value match regexp (TRUE), or does only one need to match (FALSE)

info

extra information to be included in the message (useful when writing tests in loops).

label

object label. When NULL, computed from deparsed object.

See Also

Other expectations: comparison-expectations, equality-expectations, expect_length, expect_named, inheritance-expectations, logical-expectations, output-expectations

Examples

expect_match("Testing is fun", "fun")
expect_match("Testing is fun", "f.n")

## Not run: 
expect_match("Testing is fun", "horrible")

# Zero-length inputs always fail
expect_match(character(), ".")

## End(Not run)
[Package testthat version 2.0.0 Index]